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A263541 as a simple table

na(n)
11
22
34
46
540
643
7705
8789
91148
102140
114276
125512
136672
148754
1538434
16174501
17493578
18598249
19628064
20702774
211368196
224584004
2313813057
2436425906
2587964443
26447997476
271964288296

[1,2,4,6,40,43,705,789,1148,2140,4276,5512,6672,
 8754,38434,174501,493578,598249,628064,702774,
 1368196,4584004,13813057,36425906,87964443,
 447997476,1964288296]